Skip to content

GitLab

Switch branch/tag
Find file Normal viewHistoryPermalink
smccc_v2.h 2.7 KB
Newer Older
Antonio Nino Diaz's avatar
Add support for the SMC Calling Convention 2.0    
Antonio Nino Diaz committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85 
/*
 * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#ifndef SMCCC_V2_H
#define SMCCC_V2_H

#ifndef __SMCCC_H__
#error "This file must only be included from smccc.h"
#endif

/*******************************************************************************
 * Bit definitions inside the function id as per the SMC calling convention
 ******************************************************************************/
#define FUNCID_TYPE_SHIFT		U(31)
#define FUNCID_TYPE_MASK		U(0x1)
#define FUNCID_TYPE_WIDTH		U(1)

#define FUNCID_CC_SHIFT			U(30)
#define FUNCID_CC_MASK			U(0x1)
#define FUNCID_CC_WIDTH			U(1)

#define FUNCID_NAMESPACE_SHIFT		U(28)
#define FUNCID_NAMESPACE_MASK		U(0x3)
#define FUNCID_NAMESPACE_WIDTH		U(2)

#define FUNCID_OEN_SHIFT		U(24)
#define FUNCID_OEN_MASK			U(0xf)
#define FUNCID_OEN_WIDTH		U(4)

#define FUNCID_NUM_SHIFT		U(0)
#define FUNCID_NUM_MASK			U(0xffff)
#define FUNCID_NUM_WIDTH		U(16)

#define GET_SMC_TYPE(id)		(((id) >> FUNCID_TYPE_SHIFT) & \
					 FUNCID_TYPE_MASK)
#define GET_SMC_CC(id)			(((id) >> FUNCID_CC_SHIFT) & \
					 FUNCID_CC_MASK)
#define GET_SMC_NAMESPACE(id)		(((id) >> FUNCID_NAMESPACE_SHIFT) & \
					 FUNCID_NAMESPACE_MASK)
#define GET_SMC_OEN(id)			(((id) >> FUNCID_OEN_SHIFT) & \
					 FUNCID_OEN_MASK)

/*******************************************************************************
 * Owning entity number definitions inside the function id as per the SMC
 * calling convention
 ******************************************************************************/
#define OEN_ARM_START			U(0)
#define OEN_ARM_END			U(0)
#define OEN_CPU_START			U(1)
#define OEN_CPU_END			U(1)
#define OEN_SIP_START			U(2)
#define OEN_SIP_END			U(2)
#define OEN_OEM_START			U(3)
#define OEN_OEM_END			U(3)
#define OEN_STD_START			U(4)	/* Standard Service Calls */
#define OEN_STD_END			U(4)
#define OEN_STD_HYP_START		U(5)	/* Standard Hypervisor Service calls */
#define OEN_STD_HYP_END			U(5)
#define OEN_VEN_HYP_START		U(6)	/* Vendor Hypervisor Service calls */
#define OEN_VEN_HYP_END			U(6)
#define OEN_LIMIT			U(16)

/*******************************************************************************
 * Service namespaces as per the SMC Calling Convention v2.X
 ******************************************************************************/
#define FUNCID_NAMESPACE_START		U(0)
#define FUNCID_NAMESPACE_COMPAT		U(0)
#define FUNCID_NAMESPACE_VENDOR		U(1)
#define FUNCID_NAMESPACE_SPRT		U(2)
#define FUNCID_NAMESPACE_SPCI		U(3)
#define FUNCID_NAMESPACE_LIMIT		U(4)

/* Flags and error codes */
#define SMC_64				U(1)
#define SMC_32				U(0)

#define SMC_TYPE_FAST			ULL(1)

#define SMC_OK				ULL(0)
#define SMC_UNK				-1

#endif /* SMCCC_V2_H */